On Fri, Aug 21, 2020 at 03:59:42PM +0000, David Laight wrote: > Isn't SCTP supposed to support 65536 data streams? Hm, no? Why? https://tools.ietf.org/html/rfc4960#section-5.1.1 "After the association is initialized, the valid outbound stream identifier range for either endpoint shall be 0 to min(local OS, remote MIS)-1." Section 3.3.2: Number of Outbound Streams (OS): 16 bits (unsigned integer) Defines the number of outbound streams the sender of this INIT chunk wishes to create in this association. The value of 0 MUST NOT be used. ... Number of Inbound Streams (MIS): 16 bits (unsigned integer) Defines the maximum number of streams the sender of this INIT chunk allows the peer end to create in this association. The value 0 MUST NOT be used. Marcelo